/*
 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
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package com.oracle.truffle.r.nodes.attributes;

import com.oracle.truffle.api.nodes.NodeCost;
import com.oracle.truffle.api.nodes.NodeInfo;
import com.oracle.truffle.api.profiles.ConditionProfile;
import com.oracle.truffle.r.runtime.data.RAttributable;
import com.oracle.truffle.r.runtime.data.RAttributes;
import com.oracle.truffle.r.runtime.nodes.RBaseNode;

@NodeInfo(cost = NodeCost.NONE)
public final class InitAttributesNode extends RBaseNode {

    private final ConditionProfile hasAttributes = ConditionProfile.createBinaryProfile();

    public static InitAttributesNode create() {
        return new InitAttributesNode();
    }

    public RAttributes execute(RAttributable attributable) {
        RAttributes attributes = attributable.getAttributes();
        if (hasAttributes.profile(attributes == null)) {
            attributes = RAttributes.create();
            attributable.initAttributes(attributes);
        }
        return attributes;
    }
}
